<!doctype html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>js</title>
</head>
<body>
	<h1 title='linux is very much!' id='hid'>kkkkkkkkkkkkkk</h1>
</body>
<script>
	hidobj=document.getElementById('hid');
	alert(hidobj.title);

	hidobj.title='php is very so much!'; //将title的值改变
</script>
</html>